(x <= min) ? base : sqrt(x+(base**2)-min)
...but with a special case check for 0.
1/sqrt( steepness * (abs(x-min) + abs(x-max) - (max-min)) + 1 )
. state.getBoost() *
computeLengthNorm(numTokens)
where
numTokens does not count overlap tokens if
discountOverlaps is true by default or true for this
specific field.HighFreqTerms
class extracts the top n most frequent terms
(by document frequency ) from an existing Lucene index and reports their document frequencey.NativeUnixDirectory
Directory
implementation for all Unixes that uses
DIRECT I/O to bypass OS level IO caching during
merging.Filter
.Filter
.TermStats.docFreq
and TermStats.totalTermFreq
).Directory
implementation for Microsoft Windows.NativeFSLockFactory
.Copyright © 2000-2012 Apache Software Foundation. All Rights Reserved.